baber/WOPTO huggingface dataset:
Patent GB-895148-A (GB)
Title: Improvements in or relating to electric light fittings
Inventor: HULBERT CYRIL LACY
IPC: F21V17/12
Filed: 1958-07-26
Abstract: 895,148. Electric lighting fittings. POWER CENTRE CO. Ltd. July 20, 1959 [July 26, 1958], No. 24140/58. Classes 75(2) and 75(4) A fitting for tubular lamps e.g. straight fluorescent lamps comprises a pair of end members adapted to be secured to a supporting member such as a length of trunking each end member incorporating a supporting bracket to which a reflector is releasably secured, the reflector being formed in two longitudinally abutting halves which can be withdrawn laterally when the securing means is released. The lamp is mounted in sockets 11 sliding in cylindrical housings 12 under the influence of springs. The housings 12 are carried by brackets 13 secured to trunking 10 by hollow bolts 15 through which the electric cables 16 pass to electric control means, e.g. choke and starter, housed in a channel 17 in the trunking. The brackets 13 carry supports 19 of wide angle V-shape having turned up ends 20. Reflectors 22 of the same shape as the supports 19 rest thereon being supported by the ends 20 and secured by capture bolts 21. Recesses 23 are cut in the upper edges of the reflectors 22 to accommodate the bolts 15.
Patent GB-1107053-A (GB)
Title: Tracked vehicles for maintenance and conditioning of ski-tracks and -slopes
IPC: B62D49/06
Filed: 1965-06-08
Abstract: 1,107,053. Endless track vehicles. E. PRINOTH. 8 June, 1965 [24 May, 1965], No. 24141/66. Divided out of 1,107,052. Heading B7H. [Also in Division E1] A machine for levelling snow on ski-tracks comprises a pair of endless track vehicles 1a and 1b between which is connected a frame 3 provided with cutter blades 4 and 5. A jack 8 operated through gearing 9 from a motor 6 is connected to the frame at each corner and is bonded to a rubber block which is also bonded to a plate 12 connected to the adjacent vehicle to afford a resilient connection between the frame and the vehicles. The electric motors are remotely controlled from one of the vehicles to provide for height adjustment of the frame. The rubber blocks are reinforced by chains or other flexible inextensible inserts.
Patent GB-877808-A (GB)
Title: Improvements in or relating to bucket excavators
IPC: E02F3/413
Filed: 1960-07-11
Abstract: 877,808. Bucket excavators. FAILLA, I. July 11, 1960 [April 22, 1960], No. 24160/60. Addition to 862,039. Class 68(1). The bucket excavatorof the parent Specification, which is referred to, is modified by the position of a movement multiplying linkage 212, 207, 209 between the bucket-swinging cable 215 and the swingable arm 203 by which the bucket 202 is supported on the carriage 206 slidably mounted on an inclined beam 201 extending down into the excavation being formed by the excavator.
Patent GB-1273627-A (GB)
Title: Improvements relating to systems for controlling beamed energy as applied to the surface of a workpiece
Inventor: CLARK WILFRED NEVILLE
IPC: H01J37/304
Filed: 1969-05-13
Abstract: 1,273,627. Photo-electric machine control systems. FERRANTI Ltd. May 12, 1970 [May 13, 1969], No. 24328/69. Addition to 1,111,865. Heading G1A. The beam control system of the Parent Specification is modified in that, for use where the light spot is not necessarily generated by heat, the projection system includes optical filter means to render the transducer substantially unresponsive to radiation emitted from areas of the workpiece surface not engaged by the beam, and/or the transducer is selected to have a response characteristic to obtain the same effect. For example, in the apparatus of Fig. 1, of the Parent Specification (not shown), a filter (151) may be inserted between the mirror (56) and the photo-cell, and is arranged to have a cut-off for wavelengths longer than green. Also the cell is chosen to have a non-uniform spectral sensitivity more responsive to the shorter wavelengths. Use may be made of atomic spectral lines emitted from the zone of incidence of the beam. Examples of workpiece materials quoted are aluminium (and alloys) titanium, steels, providing line spectra in the range 3000-4500Š. Suitable detectors are photo-emissive cells or photo-multipliers. When a laser beam is used, reflected radiation from the zone of interest may be preferentially detected.
Patent GB-598874-A (GB)
Title: Improvements relating to the gun-fire interrupter mechanism
IPC: F41A27/26
Filed: 1945-09-21
Abstract: 598,874. Gunfire interrupters. NASH, A. G. FRAZER-. Sept. 21, 1945, No. 24525. [Class 92 (i)] A gun-fire interrupter mechanism comprises cam sections or profile elements 2, Fig. 1, which are interchangeably secured to the surface of a cylindrical band, ring or drum 1, the mechanism being controlled by a feeler member which is arranged to ride over the cam sections both when the gun is being moved in traverse and in elevation. The elements 2 shown are bolted to the drum 1, vertical slots 5 being provided in the drum for this purpose, the arrangement of the elements be chosen in accordance with the danger zones. A 'carriage 7 has rollers which run round the drum when the gun is traversed and on this carriage is pivoted an arm 12, see also Fig. 3, which is linked to the gun to mbve with it in elevation. In the arm, on a vertical axis 20 is pivoted a lever 18 which carries a caster 19 engaging a ball 16, and this ball rides over the cam sections when such are encountered and in doing so moves the arm on its pivot 20 to depress the piston of a valve 14 against the pressure of a spring 27. This valve is coaxial with the pivotal axis of the arm 12, and its movements control the supply of fluid to a piston 48, Fig. 5, which by controlling a valve 50 serves to effect the movements of a ram 47. The ram is linked to a lever 52 which is connected by links 55, 56, to pivoted hooks 34, 40 in such manner that when one hook moves downwards the other moves upwards. One hook 40 swings about a fixed pivot 41, and the other hook about a pivot 35 on the rod of a piston 29, and both hooks are adapted to hook over a pin 37 of a lever 38 whose upper arm is linked to a sear valve 30. In use, if there is no danger in the guns being fired the valve 14 and associated parts 48, 47, 52 and 55 are in a position to depress the hook 34 into contact with pin 37, and the movement of the piston 29 effected by the depression of a firing button causes the piston, hook 34 and hence pin 37 to move thus causing lever 38 to move the valve 30 to fire the gun. When, however, a danger zone is entered the valve 14 and associated parts raise the hook 34 and depress hook 40, thus disconnecting the firing button circuit from the sear circuit and at the same time, due to the shape of the mouth of hook 40, causing the lever 38 to move the valve 30 to a " safe " position. On passing the danger zone the ram 47 causes the hook 40 to rise and the hook 34 to engage and move the pin 37, the valve 30 thereby being moved to the "fire" position.
Patent GB-616844-A (GB)
Title: Improvements in the production of styrene and styrene compounds
IPC: C07C1/20
Filed: 1946-08-17
Abstract: Styrene is prepared by reacting acetophenone with a primary or secondary alcohol containing two or more carbon atoms in the molecule in the vapour phase in the presence of a dehydrating-dehydrogenation catalyst at 200-500 DEG  C., preferably 300-400 DEG  C.  By using mono-, di-or tri-chlorine or mono- or di-methyl nuclearly substituted acetophenones the correspondingly substituted styrene is obtained. It is preferred to use a threeto nine-fold molar excess of alcohol which is converted to the correponding ketone and alcohols specified are ethanol, isopropanol, primary or secondary butanols, pentanols or hexanols.  Catalysts instanced are silica-gel, alumina, titania, zirconia, molybdenum oxide, tantalum oxide and magnesium silicate. The acetophenone may be obtained by oxidizing ethyl-benzene and so include a considerable proportion of phenyl - methylcarbinol.  In examples, styrene is prepared from acetophenone and ethanol using (1) magnesium silicate, (2) zirconium oxide, (3) molybdenum oxide, (4) tantalum oxide, (9) silica gel and (8) from oxidized ethyl benzene, ethanol and silica gel; mixed o- and p-monochlorostyrene is prepared from mixed o- and p-chlorophenyl methyl ketone and ethanol with (5) tantalum oxide, (6) alumina gel, (7) titanium oxide, (10) silica gel and (11) from chlorophenyl methyl ketone, isopropyl alcohol and silica gel; and (12) 2,5-dichlorostyrene is prepared from 2,5-dichlorophenyl methyl ketone, ethanol and silica gel and isomeric dichlorostyrenes in (13) from oxidized ethyldichlorobenzenes, ethanol and silica gel.
Patent GB-760015-A (GB)
Title: Phase discriminator
IPC: G01R25/00
Filed: 1953-09-04
Abstract: 760.015. Phase discriminators. STANDARD TELEPHONES & CABLES, Ltd. Sept. 4, 1953 [Oct. 8, 1952], No. 24538/53. Class 40(5) In a phase detector circuit of the kind in which one signal is compared with two phase-split components of another in opposed rectifier loop circuits, both signals are either stepped up by transformers, cr valve amplified. and phase shifted so as to be approximately in anti phase, and their resultant compared with the phasesplit components of one of the original signals in the opposed loop circuits. In one embodiment. Fig. 3, the two signals are assumed to be normally in phase quadrature (apart from the deviations to be measured). The first signal e1 is applied conventionally by a phase splitting transformer 11 to opposed loop circuits 17, 18 and 19, 20, across which the output voltage is measured. The step-up transformer 14 injects into both loops a voltage Be2 proportional to the second signal e2 and a step-up transformer 12 injects a voltage Ae<SP>1</SP> proportional to the first signal e1. The input to transformer 12 is phase shifted through 90 degrees lagging so that the voltage Be2, Ae<SP>1</SP>1 are approximately in phase opposition. Their resultant is compared with the original phase-split e1 input in the usual manner. A limiter 14a is switched across the transformers 14, 18, if the voltages Be2, Ae<SP>1</SP>1 are not substantially in anti-phase. In a second embodiment (Fig. 5, not shown) the two signals e1, e2 are assumed to be normally in antiphase, the transformer 18 is dispensed with: and two transformers with phase shifters phase-split the signal e1 into two stepped up components which respectively lag and lead the original signal by a small angle. The stepped up component of signal e2 is compared with one component of e1 in one loop circuit, and with the other in the second loop circuit. In a modification (Fig. 7, not shown) the two transformers and phase shifters are replaced by a transformer with two secondaries, which are tuned to effect the phase shifts. In a further embodiment, Fig. 8, the two signals e1 e2 are assumed to be normally in quadrature. The signal e1 is phase shifted through 90 degrees lagging, and is applied in phase opposition to the signal e2 to a valve V2. The amplified resultant is compared with the phase-split components of signal e1 (amplified at V1) in conventional manner.
Patent GB-1179115-A (GB)
Title: Rolling Mill Stands.
Inventor: BOND HARRY LAURENCE FRED
IPC: B21B31/30
Filed: 1966-05-26
Abstract: 1,179,115. Rolling. DAVY & UNITED ENG. CO. Ltd. 26 May, 1967 [26 May, 1966], No. 24641/67. Divided out of 1,179,114. Heading B3M. The screw-down for each housing of a rolling mill comprises a wedge unit 36 which is operated by a screw 46, 46a, the greater part of the horizontal component of rolling load being relieved from the screw by means of hydraulic cylinders 48, 48a, Fig. 3, in plan, extending between the units. Roller bearings P.T.F.E. coatings, grease, or hydraulic lubrication is provided between the sliding wedge surfaces. The screw is controlled by an automatic gauge control circuit in which the rolling load, derived from a load cell, together with the desired gauge and the mill constants, are fed to a summing and comparison unit and a resulting error signal is used to control the screws. The pressure in the cylinders 48, 48a is also automatically adjusted to keep the load on the screw within a desired range. The horizontal component of the rolling load derived from the load cell and the pressure in the cylinders are summed, and the result compared with a desired load on the screw to produce an error signal controlling the cylinder pressure.
Patent GB-921744-A (GB)
Title: Improvements in and relating to electronic devices for the comparison of two quantities
IPC: H02P23/00
Filed: 1959-07-17
Abstract: 921,744. Automatic speed control. ELECTRICITE DE FRANCE. July 17, 1959 [July 18, 1958 ; Dec. 24, 1958; Jan. 22, 1959 ; April 24, 1959 ; June 5, 1959 ; June 6, 1959], No. 24688/59. Class 38 (4). For regulation of a turbine driving an alternator, the charging voltage of capacitor C is derived from potentiometer P1 coupled to the valve of the turbine. Pulses to discharge the capacitor are applied to transistor Tr4 from a frequency multiplier M, fed from the alternator, a constant frequency oscillator O, a modulator MA and a band-pass filter FB. A gate transistor Tr1 becomes conductive each time the capacitor charging voltage exceeds a threshold value, and supplies pulses which are shaped and amplified for actuating relays 1, 2, for opening and closing the valve, the amplifiers each comprising two stages with transistors of opposed bias. A second potentiometer P2 is associated with the potentiometer P1 and is adjusted manually or by remote control. A safety relay guards against excess speed and is energized by a pulse generator having a charging voltage derived from a pre-set potentiometer and whose discharge impulses are synchronized with the speed of the machine. A similar arrangement may be used for clutch control, Fig. 3 (not shown).
Patent GB-1062227-A (GB)
Title: Improvements relating to fluid flow control valves
IPC: F16K5/04
Filed: 1965-06-11
Abstract: 1,062,227. Valves. R. ALBRECHT. June 11, 1965, No. 24729/65. Heading F2V. A valve suitable for controlling the supply to a radiator comprises an inlet port 2, a port 4 feeding the radiator, a port 5 connected to the radiator outlet, an outlet port-3 and a rotary cylindrical plug 8 for connecting either port 2 or port 5, or both of these ports, to the outlet port 3. A pin 12 limits rotation of the operating knob 11.
Patent GB-938992-A (GB)
Title: Improvements in venetian blinds
IPC: E06B9/308
Filed: 1961-07-07
Abstract: 938,992. Venetian blinds. HUNTER DOUGLAS INTERNATIONAL (QUEBEC) Ltd. July 7, 1961 [July 12, 1960], No. 24730/61. Class 20 (3). [Also in Group XXV] The tilt rod 22 of a Venetian blind is biased by spring 61 to an end position and is rotatable to its -other end position by the cord 17 wrapped around the operating pulley 21, the cord having thereon, at appropriate places bead stops 59, 60 to engage in the forked member 56 on the head rail 12. In an alternative embodiment the end of the cord 17 after being wrapped over the pulley 21 is secured to one end of a tension spring secured at its other end to the head rail and the pulley 21 drives the tilt rod through a worm gear operating device.
Patent GB-1376978-A (GB)
Title: Apparatus for developing an electrostatic latent image with a magnetic brush
IPC: G03G15/08
Filed: 1972-05-25
Abstract: 1376978 Developing electrostatic images KONISHIROKU PHOTO INDUSTRY CO Ltd 25 May 1972 [26 May 1971] 24766/72 Heading G2H Mixing of a carrier/toner particulate developer used in a magnetic brush developing apparatus is enhanced by the use of a scraper 9 which extends across the width of the magnetic brush and consists of a blade 21 and guide 22-24. Developer removed from the brush by the blade is moved along the length of the developing apparatus by the guide means. Preferably the magnetic brush is formed on a cylindrical sleeve 6, rotating about a fixed magnet assembly 1-5, and the scraper acts at a point where no magnet underlies the sleeve. The guide means may include splitters and auxiliary chutes, to promote better mixing of the developer.
Patent GB-361377-A (GB)
Title: Improvements in safety appliances for vehicles
IPC: H01H29/00
Filed: 1930-08-20
Abstract: 361,377. Controlling motor vehicles. LINWOOD, C., 190, West George Street, Glasgow. Aug. 20, 1930, No.24872. [Class 79 (v).] A safety appliance for motor vehicles comprises in combination with a source of electricity, a switch device alongside said source which interrupts the electric supply automatically and instantaneously in the event of an accident to the vehicle, and a fire-proof housing for the source and the switch. The circuit is controlled by a gravity mass. The cut-off apparatus is confined in a fire-proof, protective container 3 containing the battery 1 and a mercury switch in a circuit-breaking device 2. The mercury may be mounted in a frangible vessel. Conducting-particles or metallic balls may be used in lieu of mercury. The device shown in Fig. 3 has upper and lower compartments 8, 9. A weight 11 is carried by a glass tube 10 communicating with a cup containing mercury 13 which connects a terminal 14 with a terminal 17 through a socket 15. The weight 11 is in halves and clamps the tube 10 through a rubber sleeve 24. Steel balls prevent the mercury spilling, and oil 26 prevents oxidization. The device may be byepassed by a switch 28. In the case of a collision, the tube 10 is broken. Should the vehicle overturn, the mercury flows into the chamber 8 and breaks the. circuit. In the construction shown in Fig. 4, a piston containing a mercury cup into which dips terminals 32, 33 is held up against the resistance of a spring 38 by a breakable strut 37 supporting a weight 11. In modifications mercury cups are supported by weights dislodged by shock. In a further modification, a series of strut elements collapse when the vehicle receives an excessive shock. In the construction shown in Fig. 12, adapted for short-circuiting a magneto, terminals 72, 73 are shunted across the magneto and are connected by a ring 76 when the mass 74 is displaced. Terminals 79, 80 in a chamber are connected by mercury 81 when the vehicle is overturned.
Patent GB-425169-A (GB)
Title: Improvements in or relating to expansion chambers for hermetically sealed tanks or casings, applicable to the cooling tanks of electrical apparatus
IPC: H01F27/14
Filed: 1933-09-08
Abstract: 425,169. Pressure-relieving devices. THOMPSON, J. L., Burnage, North Park, Iver, Buckinghamshire. Sept. 8, 1933, No. 24943. [Class 135] An expansion chamber for sealed tanks or casings containing liquid has a bellows-like wall 1, the lower end of which is closed by a rigid metal plate 3 with a centrally arranged upward extension 4, the upper end 5 of which terminates at a short distance from the upper closed end 2 of the chamber and to which the supply pipe 7 is connected. The bellows may be cylindrical or slightly tapering as shown. The annular rings forming the bellows may be flat, grooved or corrugated. The rigid plate 3 may be supported on rods 9. In a modification the rigid support 3 consists of a thick circular plate on which is mounted the extension 4, 5 and has a central hole through which the pipe 7 passes.
Patent GB-1428434-A (GB)
Title: Loading process for ice cream carrier strip
IPC: A23G9/28
Filed: 1973-05-25
Abstract: 1428434 Packaging EASY SCOOP INDUSTRIES Ltd 25 May 1973 [2 June 1972] 25083/73 Heading B8C [Also in Divisions F3-F4] Scoops of ice cream are embedded in a carrier strip 14, Fig. 1, for packaging and ease of dispensing in apparatus comprising a punch 16 forming longitudinally spaced holes 35, Fig. 3, in the strip with radially projecting prongs 37, the strip passing into a freezing section 20 in which nozzles 50 of a semi-liquid ice cream dispenser 18 fill spaced cavities 46, 47 in two halves 41, 42 of metal dies 12 which are attached to an endless conveyer 11. The halves of the dies are adapted to hinge together and are cooled in the section by refrigeration apparatus (not shown). The scoops so formed being embedded in the strip by the prongs 37. A heater 22 raises the temperature of the dies to free the scoops 60 from the die cavities, and the die is thereafter opened to allow the strip to pass along a track 54 to a packaging station 24. The strip may be manually packed in thermally insulated cartons, Fig. 6, by accordion-folding or by cutting into lengths appropriate to a carton Fig. 7.
Patent GB-445751-A (GB)
Title: Improvements in chairs constructed of tubular metal and the like
IPC: A47C3/04
Filed: 1935-09-09
Abstract: 445,751. Nesting chairs. GRAY, R. T., 456, St. Kilda Road, Melbourne, Australia. Sept. 9, 1935, No. 25100. Convention date, Sept. 8, 1934. [Class 52 (ii)] In nesting chairs of the cantilever type the legs 4 extend downwardly to a point near the floor level and then curve inwardly and rearwardly at 8 to extend backwardly as the floor rails. The frames may be of tubular or strip metal. A flat spring steel strut 9, Fig. 5, may extend between the seat rails 2 below the seat.
Patent GB-208756-A (GB)
Title: Improvements in gramophones
IPC: G11B19/265
Filed: 1922-09-16
Abstract: 208,756. Magnifico, N. Sept. 16, 1922. Driving; speed - regulating and indicating; starting and stopping.-In a gramophone in which the angular speed of the turntable is varied to produce constant linear velocitv of the soundgroove relatively to the stylus, the turntable is driven bv means of a friction roller 4 engaging a disc 3, parallel to the turntable 1 and on the same spindle, the roller, against which the disc is held by a spring 13, being mounted on a grooved motor - driven spindle 4a, along which it it traversed bv a nut and screw device. This spindle is disposed slightly to one side of but parallel to a radius of the disc 3. The screw 11 is driven from the turntable spindle through bevel-gears 5, 6, a spindle 7, and gearing 8 - - 10, and the nut, which comprises two spring-held jaws 12 engaging with the screw, is mounted on the boss of the roller 4. The Figures are views from opposite sides of a machine in which the soundbox travels from the centre to the periphery of a record during playing. The machine is controlled bv means of four vertical rods carrying buttons 21, 14, 27, 28. Actuation of the button 27 starts or stops the machine by removing a spring-controlled brake from or allowing it to be applied to a drum on the spindle 4a. The button 28 enables the speed to be regulated by controlling a governor of ordinary type. By depressing the button 21, the bevel-wheels 5, 6 are disengaged by means of a lever 22, a rod 24, and a lever 25. This stops the rotation of the screw 11 and therebv allows the roller 4 to remain in driving engagement with the disc 3 at any desired distance from the centre. The turntable can thus be run at a determined constant angular speed when it is desired to use an ordinary record on the machine. A speed indicator driven from the governor-spindle is provided to show the speeds corresponding to the various positions of the roller 4. The button 14 is provided to actuate mechanism for returning the driving-roller to its starting position after the playing of a record. When the button is depressed, the disc 3 is lowered out of engagement with the roller by means of a lever 15, a rod 17 and a lever 16. At the same time, a lever 34<1> carrying a displaceable gear-wheel is moved to cause a drum 18 to be driven from the wheel 9 through a train of gearing which includes a friction-clutch. The drum thereupon winds up a cord 19, which causes the jaws 12 of the nut to be freed from the screw 11 and also pulls back the roller 4 to its original position. Reference has been directed by the Comptroller to Specifications 22963/07 and 182,550.
Patent GB-321491-A (GB)
Title: Improvements in storm valves for ships
IPC: B63B29/00
Filed: 1928-09-01
Abstract: 321,491. Taylor, G. P. Sept. 1, 1928. Storm valves for ships comprise a valve seating 7 formed in the discharge pipe 4 the valve 10 forming part of a balance lever 9 being mounted on a pin 12 which works in lugs 13 forming part of the detachable casing 11 into which the balance lever 9 extends. A characteristic feature of the invention is the provision of a gasket 14 apertured at 15 to permit the balance. lever extending there through The valve may be held tight on its seat by the screw 25.